Shyam Balasubramanian's Discussions

Hi Folks,I live in the Netherlands and going to Denmark over the weekend (distance: 800 km, up North). I use the Arducopter v3.0 firmware, and it hovers quite well at home.The magnetic declination as…Continue

Hi All,I have been pursuing a research project at a company (in Netherlands) where I need to occasionally fly waypoints outdoors. The task is an autonomous flight within line-of-sight and and some…Continue

Hi All,I took a flight today with my giant copter, I found 2 of the motors were not responsive.I tried to spin the motors using simple motor spin test using CLI test in Mission Planner.'Hear' the…Continue

Shyam Balasubramanian's Page

Latest Activity

"Hello Shyam,
Thanks for the tutorial, just what a "dummy" needed :). Currently I am trying to get live data from apm. I am using arduino uno with the apm. I need to get the updated parameters like IMU, attitude,battery staus etc. Can you…"

"Hello Shyam,
Thanks for the tutorial, just what a "dummy" needed :). Currently I am trying to get live data from apm telemetry. I just want the basic data imu, attitude,battery staus etc. Can you suggest any simple way as I am new to all…"

"But, suppose if I go to the field where 1 MAV and GCS pair are already there and I install my own GCS and MAV pair on the same field so my question is that will it affect the ongoing communication occurring between first MAV/GCS pair ?."

"Hello All.
I have one query is it possible to connect 2 or more GCSs with single MAV ? If it is then how ?
Mission Planner has hardcoded systemid = 255 and componentid = 190,so, if I connect one or more GCSs then how MAV will differentiate between…"

"Luke
I got a X8 and I am trying to fly this in warehouse and want to control it to move slower (like the AR Drone) but I was not successful. Can you please give some idea as what to do.
Thanks for your help.
Socrates"

"Thanks for your reply Shyam. But, I am not having any drone(Hardware) so, Is there any simulator available which can simulate the environment of drone or is there any other way from which I can test my own custom Mavlink messages without using…"

"Hi Murtaza,
The ArduPilot already uses MavLink messages for communication between the drone and your laptop (PC/ tablet). You do not need additional hardware than there already is. You can start testing your MavLink messages between your PC and a…"

"Hi,Shyam nice contribution of yours.
I am new to the DIY drones.Currently I am trying to build a java application that can control MAV(drone) in air for that I came to know about Mavlink library. I read about it but, the thing which I am not…"

"Hi Santosh,
I posted this over the forum a year and a half ago, I have moved on with other projects now;)
Your statement on the I2C is right. However, I did not integrate the IR sensors then for some reason or the other. If you do manage to…"

"Hi Shyam,
Although the I2C bus is connected to GPS+Compass, I think we can connect multiple other I2C devices on the same bus (isnt that the purpose of having I2C instead of many I/O ports). I dont think there is a need to use another board. As long…"

"However, there is nothing that stops someone from taking the open source code and making it proprietary to sell. Cheerson CX-20 flight controller is a cloned APM 2.5.2 which they are selling as proprietary and their firmware is custom and not…"

"Hello Shyam! thanks for your attention! I really need your help!
I need to build my own custom tool (like Mission Planner(MP) or QGroundControl(QGC) Ground station control (GCS)) to communicate with my quadcopter.
the quadcopter that i…"

You can purchase it from amazon.de (search for 'propeller 10x4.7' in the search box). Apart from that you can buy it from hobbyking.com (EU warehouse), www.buildyourowndrone.co.uk (same as Arducopter props) are available there. Ebay.nl or ebay.co.uk are also good options, btw!

You do not need to order it from 3DRobotics, USA (it is way too expensive from there, esp. due to shipping). I never order small parts from them. For screws, other hardware items I order from farnell or hobbytronics.co.uk

Hi Shyam, I'm a drone sw developer, currently working on updates to the px4 firmware and qgroundcontrol (among other things).

I wonder if you've come across any academic projects involving precision multirotor landing and takeoff? What I'm looking for is tech that will essentially allow a multirotor to land in a box not much bigger than itself. If you think of anything, let me know. Thanks!

Thanks Shyam for your comments. Here are some flow diagrams of (stabilize)/(altitude hold) modes. I have downloaded them earlier but they will give you a good idea about the controller. Hope this will provide you a kick start to understand the basic working of PID controllers. Please find the flow diagrams of the controllers attached!.

1) I want to import all sensor data of apm board (gps, magnetometer...) to matlab/simulink and send trajectory data(a set of 3 axis coordinates of target nodes in order)2) I want to get speed transfer function of motors real time in order to get PID parameters via matlab/simulink(i know that we can tune PID parameters via mission planner soft. but i want to learn about this method)